Master the four methods of ricefield eel to survive the winter
1. Overwintering with water. Monopterus Albus is a cold-blooded fish with variable temperature and strong adaptability to the environment. When the air temperature drops below 10 ℃ (growth temperature 15 ℃ ~ 30 ℃), it is rare to eat and hibernate in the hole. In order for Monopterus Albus to survive the winter safely, the water level in the culture pond should be raised to 30 ~ 50cm, and the water temperature at the bottom of the pool should be kept above 0 ℃ in winter. If the pool is full of ice, the ice must be opened every day to prevent rice field eel from lack of oxygen.
two。 The dry pond overwintering method. Drain the pool water when the water temperature is below 10 ℃ to ensure that the bottom soil is moist. Cover the surface of the pond soil with a layer of rice straw or wheat straw and corn straw with a thickness of 30 cm.
3. Indoor overwintering. When the air temperature is below 10 ℃, transfer the rice field eel cultured in the pond to overwintering indoors, and put the rice field eel into the pool or bucket according to the proportion of 1 kg of rice field eel to 2 kg of water indoors. Change the water once a day to ensure that the indoor temperature is between 2 ℃ and 5 ℃.
4. Overwintering in plastic greenhouse. When the water temperature is lower than 12 ℃ in winter, the effect of overwintering with plastic greenhouse is also very good. The water level of the pond in the plastic greenhouse is slightly higher than that of culture, and the temperature in the greenhouse is kept between 2 ℃ and 8 ℃. When the temperature is highest at noon every day, open the vents in the greenhouse to make the air in the shed fresh, and install vents at the top of the greenhouse to prevent Monopterus Albus from lack of oxygen.
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There are four points that need to be paid attention to in fox breeding.
Foxes have high economic value. Its main product is fox skin, which belongs to large capillar. it has the advantages of tough and wear-resistant, soft and lightweight, thermal insulation and beautiful appearance. It is a high-quality raw material for making fur products such as leather collar, cap, leather mattress and so on. How to raise it reasonably so as to create a higher price
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The key to prevent cold damage in fish ponds in winter
In cold and cold winter, fish ponds often freeze to death, starve or suffocate because the water surface is too thick. Do a good job in the prevention of cold injury in winter and make the fish live safely through the winter, which can lay a good foundation for the strong growth of fish in winter, stocking and early listing in next spring, and make fish culture benefit extremely.
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